-- CreateEnum
CREATE TYPE "MessageRole" AS ENUM ('system', 'user', 'assistant');

-- CreateTable
CREATE TABLE "user" (
    "id" TEXT NOT NULL,
    "name" TEXT NOT NULL,
    "email" TEXT NOT NULL,
    "created_at" TIMESTAMP(3) NOT NULL DEFAULT CURRENT_TIMESTAMP,
    "updated_at" TIMESTAMP(3) NOT NULL,

    CONSTRAINT "user_pkey" PRIMARY KEY ("id")
);

-- CreateTable
CREATE TABLE "chat" (
    "id" TEXT NOT NULL,
    "created_at" TIMESTAMP(3) NOT NULL DEFAULT CURRENT_TIMESTAMP,
    "updated_at" TIMESTAMP(3) NOT NULL,
    "title" TEXT NOT NULL DEFAULT '(no title)',
    "userId" TEXT,
    "mediaUrl" TEXT NOT NULL,

    CONSTRAINT "chat_pkey" PRIMARY KEY ("id")
);

-- CreateTable
CREATE TABLE "message" (
    "id" TEXT NOT NULL,
    "created_at" TIMESTAMP(3) NOT NULL DEFAULT CURRENT_TIMESTAMP,
    "updated_at" TIMESTAMP(3) NOT NULL,
    "userId" TEXT,
    "chatId" TEXT NOT NULL,
    "content" TEXT NOT NULL,
    "result" JSONB,
    "role" "MessageRole" NOT NULL,

    CONSTRAINT "message_pkey" PRIMARY KEY ("id")
);

-- CreateIndex
CREATE UNIQUE INDEX "user_email_key" ON "user"("email");

-- AddForeignKey
ALTER TABLE "chat" ADD CONSTRAINT "chat_userId_fkey" FOREIGN KEY ("userId") REFERENCES "user"("id") ON DELETE SET NULL ON UPDATE CASCADE;

-- AddForeignKey
ALTER TABLE "message" ADD CONSTRAINT "message_chatId_fkey" FOREIGN KEY ("chatId") REFERENCES "chat"("id") ON DELETE CASCADE ON UPDATE CASCADE;

-- AddForeignKey
ALTER TABLE "message" ADD CONSTRAINT "message_userId_fkey" FOREIGN KEY ("userId") REFERENCES "user"("id") ON DELETE SET NULL ON UPDATE CASCADE;